export default function(timestamp, showTime = false) {
    const date = new Date(+timestamp);
    const month = (date.getMonth() + 1).toString().padStart(2, "0");
    const day = date
        .getDate()
        .toString()
        .padStart(2, "0");
    let str = `${date.getFullYear()}-${month}-${day}`;
    if (showTime) {
        const hour = date
            .getHours()
            .toString()
            .padStart(2, "0");
        const minute = date
            .getMinutes()
            .toString()
            .padStart(2, "0");
        const second = date
            .getSeconds()
            .toString()
            .padStart(2, "0");
        str += ` ${hour}:${minute}:${second}`;
    }
    return str;
}